What is the after tax cost of debt if interest rate is 13% and tax rate is 20%

Example:-

Debt = $1,000.00
Interest for 1 year = $130.00
Tax on $130.00 @ 20% = $26.00
After Tax Cost of Debt = $104.00
Rate = 10.4%.

Shi Importers balance sheet shows $300 million in preferred stock and $250 million in total equity